APA (7th ed.) Citation

Downs, R. B. (1978). Books that changed the world (2d ed.). American Library Association.

Chicago Style (17th ed.) Citation

Downs, Robert B. Books That Changed the World. 2d ed. Chicago: American Library Association, 1978.

MLA (8th ed.) Citation

Downs, Robert B. Books That Changed the World. 2d ed. American Library Association, 1978.

Warning: These citations may not always be 100% accurate.